What Causes the Engine Malfunction Light to Illuminate and the Vehicle to Fail to Start?

What Causes Unstable Idle Speed in a New Car?

The reasons for unstable idle speed in a new car are: 1. Air, gasoline vapor, and combustion exhaust entering the intake manifold, causing the mixture to be too rich or too lean; 2. Ignition module failure, incorrect spark plug gap, spark plug electrode erosion or damage, excessive resistance in high-voltage wires; 3. Injector clogging, fuel filter clogging, fuel pump screen clogging, fuel pressure regulator failure, return line clogging, and other faults causing the mixture to be too rich or too lean; 4. Failure or damage of the engine intake system's actuators; 5. Excessive carbon buildup on the throttle and surrounding intake passages, changing the cross-sectional area of the air passage, making it impossible for the control unit to precisely control the idle air intake.

2

5

Share

What is the difference between the CS75 and CS75 Plus?

The differences between the CS75 and CS75 Plus are: 1. Different body dimensions: The CS75 measures 4650mm in length, 1850mm in width, and 1705mm in height; the CS75 Plus measures 4690mm in length, 1865mm in width, and 1710mm in height. 2. Different positioning: The CS75 is a premium SUV, while the CS75 Plus is an A+ class SUV. Both the CS75 and CS75 Plus are vehicles under the Changan Automobile brand, equipped with a 1.5T turbocharged engine, delivering a maximum power of 131kW and a maximum torque of 265Nm.

3

0

Share

What is the difference between the Jeep Sahara and Rubicon?

The differences between the Jeep Sahara and Rubicon are: 1. Different ground clearance: The Sahara has a ground clearance of 254mm; the Rubicon has a ground clearance of 274mm. 2. Different body dimensions: The Sahara's body dimensions are 4334mm in length, 1894mm in width, and 1839mm in height; the Rubicon's body dimensions are 4334mm in length, 1894mm in width, and 1841mm in height. Both the Jeep Sahara and Rubicon are equipped with a 2.0T turbocharged engine and an 8-speed automatic transmission, with a maximum power of 195.4kW and a maximum torque of 400Nm.

1

3

Share

What are the differences between Wuling Rongguang V and Wuling Hongguang V?

The differences between Wuling Rongguang V and Wuling Hongguang V are: 1. Different transmissions: Wuling Rongguang V is equipped with a 6-speed manual transmission; Wuling Hongguang V is equipped with a 5-speed manual transmission. 2. Different body dimensions: Wuling Rongguang V has body dimensions of 4415mm in length, 1665mm in width, and 1850mm in height; Wuling Hongguang V has body dimensions of 4425mm in length, 1670mm in width, and 1860mm in height. Both Wuling Rongguang V and Wuling Hongguang V are equipped with a 1.5L naturally aspirated engine, with a maximum power of 73kW and a maximum torque of 140Nm. Both models use a MacPherson independent suspension for the front suspension and a leaf spring non-independent suspension for the rear suspension.

13

4

Share

What is the function of a car caliper?

The functions of a car caliper are: 1. To significantly enhance braking force; 2. To slow down, stop, or maintain the stopped state of moving wheels; 3. To press the brake pads against the brake disc to generate braking effect; 4. To prevent impurity particles from damaging the piston. The colors of car calipers are: red, yellow, and gray. A car caliper is the component that applies force to the outer protruding part of the brake disc. The hydraulic pressure generated by the brake master cylinder acts on the piston inside the caliper. After the piston expands, it pushes the brake pads against the brake disc, thereby enhancing braking performance.

15

5

Share

Will a Vehicle Be Automatically Deregistered If It Fails Annual Inspection?

If a vehicle does not undergo annual inspection, it will not be automatically deregistered. However, failing to deregister it may result in unnecessary fees and could affect future vehicle registrations, such as license plate applications for other cars. Additionally, if a vehicle remains uninspected for three years, its license plate will be revoked, and the vehicle may be confiscated, forcibly scrapped, and sent to a dismantling facility. Vehicle deregistration refers to the scrapping of the vehicle and the cancellation of all its associated information. Registered vehicles must be forcibly scrapped under the following circumstances, and owners should refer to the vehicle's usage period and mileage. Annual inspection is a legal requirement, meaning it is mandatory—every vehicle on the road must undergo inspection. To make things easier for vehicle owners, the government has introduced a six-year exemption policy for new vehicles that meet the inspection criteria, allowing them to skip annual inspections during this period. The purpose of annual inspection is to: Check whether the engine, chassis, body, and auxiliary equipment are clean, intact, and functional; whether the car's paint is uniform and aesthetically pleasing; whether major components have been replaced and match the initial inspection records. Verify whether the vehicle's braking performance, turning maneuverability, lighting, exhaust system, and other safety factors comply with the "Technical Requirements for Safe Operation of Motor Vehicles." Inspect whether the vehicle has been modified, altered, or reconstructed; whether all records in the vehicle's registration certificate, license plate, and vehicle file match the current condition of the vehicle and whether any changes have been made; and whether approval, modification, or alteration procedures have been applied for. Check whether the license plate printed on the vehicle, the vehicle registration certificate, and the enlarged license plate characters are damaged or illegible, and whether they need replacement.

6

2

Share

What Causes the Engine Malfunction Light to Illuminate and the Vehicle to Fail to Start?

What Causes Unstable Idle Speed in a New Car?

What is the difference between the CS75 and CS75 Plus?

What is the difference between the Jeep Sahara and Rubicon?

What are the differences between Wuling Rongguang V and Wuling Hongguang V?

What is the function of a car caliper?

Will a Vehicle Be Automatically Deregistered If It Fails Annual Inspection?

Where is the Peugeot 307's cabin air filter located?

What does Land Cruiser GT mean?

Which Cars Have Headlight Cleaning Function?

What is the maximum speed on icy and snowy roads?